263 



Less ovate and a little more elongate than A. indignus, 

 Blackb., and easily distinguishable from it by the notably 

 finer and closer puncturation of its head pronotum and elytra. 

 The elytral punctures on the interval between the subsutural 

 stria and the next pair of striae would, if placed in regular 

 rows, form five rows in this species, but would form only four 

 rows in huligiiKs. On account of its somewhat less robust 

 tarsi I think it likely that the type of this species is a female. 



South Australia : near Adelaide. 



A. (Serlcest/tisJ micans, Blackb. As noted above under 

 the heading of A. gravicollis, sp. nov., 1 find it necessary to 

 amend the description of .4. micans as follows: — For "rufa, 

 caj^ite prothorace elytrisque rufo-coeruleis iridescentibus," 

 read "'atro-coeruleus, laete iridescens, palpis antennis tarsisque 

 rufescentibus" ; and in the last line of the diagnosis, to 'trun- 

 cato" add ''vel leviter emarginato." 



A. clialceus, sp. nov. Ovatus; convexus ; sat nitidus; subgla- 

 ber; rufo-testaceus, supra iridescens; antennis 8-articu- 

 latis, flabello perbrevi ; clypeo conf ertim, fronte minus 

 crebre, parum fortiter punctulatis; prothorace nitido, 

 quam longiori fere duplo latiori, antice sat angustato, 

 supra subfortiter sat crebre (latera versus magis crebre) 

 punctulato, parum manifeste canaliculato, lateribus sat 

 rotundatis, angulis anticis acutis sat productis posticis 

 (superne visis) obtusis, basi marginata utrinque manifeste 

 sinuata ; scutello punctulato ; elytris geminato-striatis, 

 sat crebre subfortiter punctulatis; pygidio sat crebre vix 

 fortiter punctulato; tibiis anticis extus tridentatis; tar- 

 sis posticis modice elongatis sat robustis, articulo basali 

 quam 2"'^ nonnihil breviori; coxis posticis quam metaster- 

 num multo brevioribus ; segmento ventrali apicali pos- 

 tice leviter emarginato. Long., 6 1.; lat., 3 1. 

 Rather brightly iridescent, the iridescence in some lights 

 having a brassy tone. Among the species bearing a general 

 resemblance to it in size colouring and vestiture this species 

 is distinct by its pronotum at its widest evidently behind the 

 middle (viewed from above) and having puncturation which 

 becomes only moderately closer and finer near the lateral mar- 

 gins; also by its pronotum being notably more nitid than in 

 its immediate allies. I am doubtful of the sex of the type. 

 The decidedly emarginate apex of the apical ventral segment, 

 and the somewhat elongate and robust hind tarsi, perhaps in- 

 dicate its beings a male. I have two specimens of narrower 

 and less ovate build and having somewhat less robust tarsi, 

 but not otherwise noticeably different, which may be the other 

 sex, but it is quite possible that they represent another species. 



